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Finding the Fourth Proportional to 7,368.88, 10,171.20 and 5,887.12

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Solution

The fourth proportional to 7,368.88, 10,171.20 and 5,887.12 is: 8,125.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,368.88 : 10,171.20 = 5,887.12 : x
  2. Step 2: Convert to fraction form
    7,368.88/10,171.20 = 5,887.12/x
  3. Step 3: Cross multiply
    7,368.88x = 10,171.20 × 5,887.12
  4. Step 4: Simplify right side
    7,368.88x = 59,879,074.94
  5. Step 5: Solve for x
    x = 59,879,074.94/7,368.88
  6. Step 6: Final answer
    x = 8,125.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.